sisc.modules.hashtable
Class WeakHashtable

java.lang.Object
  sisc.util.Util
      sisc.data.Expression
          sisc.data.Value
              sisc.modules.hashtable.HashtableBase
                  sisc.modules.hashtable.Hashtable
                      sisc.modules.hashtable.WeakHashtable

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, Immediate, ExpressionVisitee, Version

public class WeakHashtable
extends Hashtable

See Also:

Serialized Form

Field Summary

Fields inherited from class sisc.data.Expression

annotations, EMPTYSET

Fields inherited from class sisc.util.Util

BACKQUOTE, BEGIN, bundles, caseSensitive, EMPTYLIST, EMPTYVEC, EOF, ERRORK, EVAL, EXPSC, EXPTOP, FALSE, FCONT, FIVE, JEXCEPTION, LAMBDA, LOCATION, maxFloatPrecision, MESSAGE, minFloatPrecision, NAME, OTHER, PARENT, permitInterrupts, QUOTE, QUOTESYM, REPORT, SETBANG, SISC, SISC_SPECIFIC, SISCB, SOURCE_COLUMN, SOURCE_FILE, SOURCE_LINE, SYMENV, THIS, TOPLEVEL, TRUE, UNQUOTE, UNQUOTE_SPLICING, VOID, ZV

Fields inherited from interface sisc.util.Version

VERSION

Constructor Summary

WeakHashtable()

WeakHashtable(Procedure equalsProc, Procedure hashProc)

Method Summary

protected java.util.Map	getMap()
protected HashtableKey	makeKey(Value k)
boolean	valueEqual(Value v) Compares this value to another for semantic equality.

Methods inherited from class sisc.modules.hashtable.Hashtable

addAList, callEquals, callHashCode, clear, deserialize, display, get, getEqualsProc, getHashProc, keys, put, remove, serialize, size, toAList, valueHashCode, visit

Methods inherited from class sisc.data.Value

apply, displayNamedOpaque, equals, eqv, eval, express, getValue, synopsis, synopsis, toString, write, writeReplace

Methods inherited from class sisc.data.Expression

deserializeAnnotations, getAnnotation, getAnnotation, getAnnotationKeys, getAnnotations, getName, readExternal, readResolve, serializeAnnotations, setAnnotation, setAnnotation, setName, visitAnnotations, writeExternal

Methods inherited from class sisc.util.Util

annotated, annotatedAppEval, append, argCheck, argsToSymbols, assq, bininport, bininstream, binoutport, binoutstream, box, character, charinport, charinreader, charoutport, charoutwriter, charsetFromString, chr, cont, currentClassLoader, env, error, error, error, error, error, error, error, expr, getDefaultCharacterSet, immutablePair, immutableVector, inport, javaExceptionToString, javaWrap, justify, length, liMessage, liMessage, liMessage, liMessage, liMessage, liMessage, liMessage, list, list, list, list, list, makeURL, mapcar, memq, nlib, num, outport, pair, pairToExpressions, pairToExpVect, pairToValues, proc, read, registerBundle, reverse, reverseInPlace, simpleErrorToString, sourceAnnotations, str, string, sym, symbol, symval, truePair, truth, truth, typeError, typeError, updateName, url, url, url, valArrayToList, valArrayToList, valArrayToVec, vec, warn, warn, warn

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

WeakHashtable

public WeakHashtable()

WeakHashtable

public WeakHashtable(Procedure equalsProc,
                     Procedure hashProc)

Method Detail

makeKey

protected HashtableKey makeKey(Value k)

Overrides:

makeKey in class Hashtable

getMap

protected java.util.Map getMap()

Overrides:

getMap in class Hashtable

valueEqual

public boolean valueEqual(Value v)

Description copied from class: Value

Compares this value to another for semantic equality. Used to implement Scheme's 'equal?'. Subclasses must test for pointer equality as well as semantic equality, so that infinite loops on recursive structures are less likely.

Overrides:

valueEqual in class Hashtable

Parameters:

v - the other Value